Lara's mouth is dry and she realizes that she hasn't had anything to drink all morning. The water level in her cells has dropped and she feels thirsty. Which of the following can be used to explain why she is motivated to get a drink?a. drive-reduction theory
b. set-point theory
c. human factor
d. basal metabolic rate

What type of medicine to people take if they are lactose intolerance

Which of the following is the definition of ventilation as it relates to the respiratory system?

You isolate an infectious substance capable of causing disease in plants, but you do not know whether the infectious agent is a bacterium, virus, viroid, or prion. you have four methods at your disposal to analyze the substance and determine the nature of the infectious agent.i. treat the substance with enzymes that destroy all nucleic acids and then determine whether the substance is still infectious.ii. microscope.iii. culture the substance on nutritive medium, away from any plant cells.iv. treat the sample with proteases that digest all proteins and then determining whether the substance is still infectious.if you already know that the infectious agent was either bacterial or viral, which method(s) listed above would allow you to distinguish between these two possibilities? a) ib) iic) ii or iiid) iv